They have a feature where they toggle sound presets depending on your location. That's the only thing that requires an account, as well as access to your location. It's opt-in however (and pretty useless imo).
If it can toggle ANC and "passthrough" mode based on location, that would actually be an awesome feature for me. I often wear my earbuds while walking, taking the train, and shopping, and in the train I like having ANC on but at the supermarket I like having passthrough mode on do I can hear the cashier better.
Why switch from Gitea to Forgejo, if I may ask?